Costain is a surname of English, Scottish and Manx origin.[1] When originating in Scotland and northern Ireland the surname is an Anglicisation of the Gaelic Mac Austain, meaning "son of Austin". The English surname is a reduced form of Constant or Constantine.[1]

People named Costain

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References

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  1. ^ a b "Costain Name Meaning and History". Ancestry.com. Retrieved 23 December 2008.